20989686

素因数分解:

$2^1\times 3^1\times {\mathrm{821}}^1\times {\mathrm{4261}}^1$

素因数の和:5087

約数の個数: 16

約数和(自身を含む): 42040368

約数和(自身を除く): 21050682

約数列:

[1, 2, 3, 6, 821, 1642, 2463, 4261, 4926, 8522, 12783, 25566, 3498281, 6996562, 10494843, 20989686]

約数ペア:

[(1, 20989686), (2, 10494843), (3, 6996562), (6, 3498281), (821, 25566), (1642, 12783), (2463, 8522), (4261, 4926)]